# -*- coding: utf-8 -*-#
#-------------------------------------------------------------------------------
# 建立者:        Young  
# Name:         demo4.20
# Description:  序列的乘法
# Author:       $赵怡蕾
# Date:         2019/1/29
#-------------------------------------------------------------------------------

# 字符串与数字相乘，运行结果：hellohellohellohellohello
print('hello'*5)
# 序列与数字相乘，运行结果：[20, 20, 20, 20, 20, 20, 20, 20, 20, 20]
print([20]*10)
# 将值为None的序列和数字相乘，运行结果：[None, None, None, None, None, None]
print([None]*6)